A candle loses nothing by lighting another candle.

To attain knowledge, add things every day. To gain wisdom, remove things every day.

Knowledge, like air, is vital to life. Like air, no one should be denied it.

The value of knowledge depends on what else you know.

The man of knowledge must be able not only to love his enemies but also to hate his friends.

Great minds are always feared by lesser minds.

The art of being wise is the art of knowing what to overlook.

Risk comes from not knowing what you’re doing.

Alchemists turned into chemists when they stopped keeping secrets.

Those who have the knowledge, don’t predict. Those who predict, don’t have knowledge.

Better to understand a little than do misunderstand a lot.

Science gives us knowledge, but only philosophy can give us wisdom.

Knowledge can only be volunteered it cannot be conscripted.

Zeal without knowledge is the sister of folly.

The more you possess the more you are possessed.

The more you know, the less you need to say.

Knowledge without transformation is not wisdom.

Your most unhappy customers are your greatest source of learning.

Nothing that is worth knowing can be taught.